Heatable insert



FIG. 1 is a top perspective view of a heatable insert.

FIG. 2 is front elevation view of the heatable insert.

FIG. 3 is a back elevation view of the heatable insert.

FIG. 4 is a left side elevation view of the heatable insert.

FIG. 5 is a right side elevation view of the heatable insert.

FIG. 6 is a top plan view of the heatable insert; and,

FIG. 7 is a bottom plan view of the heatable insert.

The dashed lines are representative of stitching and are not included in the claimed design. 

CLAIM The ornamental design for a heatable insert, as shown and described. 